Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb

Walkom, S F; Alexandri, P; Connaughton, S; Gardner, G; Williams, A; Brown, D J

Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/56125

Title:	Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb
Contributor(s):	Walkom, S F (author) ; Alexandri, P (author) ; Connaughton, S (author); Gardner, G (author); Williams, A (author); Brown, D J (author)
Publication Date:	2023-07-26
Open Access:	Yes
Handle Link:	https://hdl.handle.net/1959.11/56125
Open Access Link:	http://www.aaabg.org/aaabghome/AAABG25papers/75Walkom25306.pdf
Abstract:	Dual-energy X-ray absorptiometry (DEXA) is rapidly gaining acceptance as a reference method for analysing body composition. Since initial developments in 2017, as part of the Advanced Livestock Measurement Technologies project, there has been an influx of DEXA measurements and some additional computed tomography (CT) measurements on genetically informative animals via the MLA funded Resource Flock and companion industry satellite flocks. Although more data is required, the results suggest that the DEXA lean meat yield is likely to be the same genetic trait as the CT measured lean meat yield. These results are promising and plans regarding the utilisation of DEXA data within Sheep Genetics national evaluation should begin. However, improving hook tracking technologies and data transfer pathways concurrently is also required.
Publication Type:	Conference Publication
Conference Details:	AAABG 2023: 25th Conference of the Association for the Advancement of Animal Breeding and Genetics, Perth, Australia, 26th - 28th July, 2023
Source of Publication:	Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.25, p. 306-309
Publisher:	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Place of Publication:	Armidale, Australia
ISSN:	1328-3227
Fields of Research (FoR) 2020:	300305 Animal reproduction and breeding
Socio-Economic Objective (SEO) 2020:	100412 Sheep for meat
Peer Reviewed:	Yes
HERDC Category Description:	E1 Refereed Scholarly Conference Publication
Publisher/associated links:	http://www.aaabg.org/aaabghome/proceedings25.php
Appears in Collections:	Animal Genetics and Breeding Unit (AGBU) Conference Publication